• Highest wind resistance and waterproof.• Prevents rain damage.• Helps prevent mold, rot, and roof leaks.• Stronger and lighter than felt.• Adds value to your home.

DELTA®-ROOF Tough, Long-lasting Underlayment for Asphalt Shingle Roofs.

HIGH PERFORMANCE AIR & MOISTURE BARRIERS

AC188 ApprovedESR-2625

A reliable combination of materials that protect against rain, wind, dust and driven snow.

DELTA®-ROOF

■ Consists of four layers. A watertight layer between two spun-fibre fabrics and a reinforcement grid provides much improved wind resistance and longevity over asphalt saturated base sheets.

■ Is watertight and provides reliable protection against rain, wind, dust and driven snow.

■ Thanks to its special surface structure, is very abrasion-proof and non-slip, wet or dry.

■ Can be laid directly underneath all conventional roofing products.

■ Is pleasantly light in comparison to bitumen and asphalt saturated sheathing membranes.

■ Speeds up installation and reduces labor cost due to roll size and weight.

Technical Data Overview:

Material Spun-fibre material combined with a waterproof intermediate layer and reinforcement grid

Application On pitched roofs with rigid sheathing

ASTM E96 (Proc. B)Water Vapor Transmission Permeance Perms

0.415 (g/m2. 24h) 3.42 (ng/Pa/s/m2) 0.06 (grains/h/ft2/inHg)

ASTM D5035MD: Breaking Load MD: Elongation at break CD: Breaking LoadCD: Elongation at break

146.9 lb/2 in. (653.5 N/50 mm) 17.7 %137.6 lb/2 in. (611.8 N/50 mm) 18.3 %

ASTM D1922 - 03aMD: Tear resistanceCD: Tear resistance

2624 g 2975 g

ASTM D4533 - 2004MD: Tearing Strength CD: Tearing Strength

41.6 lb (185.2 N)36.1 lb (160.6 N)

ASTM D751 (sections 33-36)MD: Tearing Strength CD: Tearing Strength

N.M.127.9 N

AATCC Test Method 42-2000Resistance to water penetration

795.4 cm

CAN/CGSB-4.2 No 26.3 Water impact resistance

pass

ASTM D3462-03 section 8.1.11 Pull-Through Force

284.0 N

Service temperature range -40 °F to 176 °F (- 40 °C to + 80 °C)

Roll weight approx. 35 lbs (16 kg)

Roll size 164 ft x 4.92 ft (50 m x 1.5 m)8 squares

Due to variable weather and UV conditions, we recommendefficient covering of the roof underlayment.

DEL

TA®

is a

regi

ster

ed tr

adem

ark

of E

wal

d D

örke

n AG

, Her

deck

e, G

erm

any.

■ Visit us on:

LinkedIn Twitter YouTube

■ Laid directlyunderneath conventionalroofing products

■ Special surface structure. Abrasion-proof and non-slip, wet or dry

■ Reinforcement Grid

DELTA® quality branded products made by Dörken.

■ The information printed in this brochure reflects product infor-mation and specifications at the date of printing. The manufacturer reserves the right to make changes when necessary. All rights reserved. DELTA®-branded quality products manufactured by Dörken.

Dörken Systems Inc.

4655 Delta Way

Beamsville,

ON L0R 1B4, Canada

Tel.: +1 (905) 563 3255

Fax: +1 (905) 563 5582

info@dorken.com

www.dorken.com

A Dörken Group company